What a great thread! Having owned my IS a little over two months now, I am noticing that it is a lot happier in either full auto with sport on, or manual mode with or without sport mode. When you refer to dtc off and completely off, what do you mean? One press of a button it is off, I am not aware of any secondary deactivation.. I may be wrong.

Thanks!

One press is partially off, and the second option is press and hold for 5 seconds for completely off.

I believe this to be incorrect. My understanding is DTC is partially on by default. One quick press puts it full on and one long several second press turns completely off? Someone correct me if I'm wrong